1. The schematic shown in Figure 1 uses a pair of ideal opamps.
(a) Derive an expression for $V_{out}$ in terms of input voltages and resistors. Your
expression should clearly separate the input signals, the resistance terms and any
other constants that would appear in the gain term.
(b) If R1=1k, R2=2k, R3=3k, V1 = 1V and V2 = 2V, what will be the $V_{out}$?
R3
Gnd
R2
R2
R1
R1
V1
+
Vout
+
V2
Figure 1
